Terpolymerization of Propylene Oxide, CO2, and p-Toluenesulfonyl Isocyanate for the Synthesis of Poly(urethane-carbonate): p-Toluenesulfonyl Isocyanate Acts as a Backbiting Suppressor DOI

Satoshi Muranaka,

Io Yamamoto,

Tadashi Ema

и другие.

ACS Applied Polymer Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 12, 2024

Terpolymerization of propylene oxide, CO2, and p-toluenesulfonyl isocyanate (TsNCO) was catalyzed by bifunctional AlIII porphyrin catalysts to afford polyurethane-poly(propylene carbonate), PU-PPC, with high CO2 contents up 39 wt %. TsNCO acted as a backbiting suppressor at the initial stage terpolymerization, contributing selective formation PU-PPC. In contrast electrophilicity TsNCO, carbamate anion generated reaction alkoxide intermediate has modest nucleophilicity owing tosyl group, which allows for smooth PU units subsequent elongation PPC on catalyst selectively produce Terpolymers having in 1:1 ratio had glass transition temperature (Tg) 86–104 °C, while those higher Tg values 39–40 °C. Block copolymer PU-b-PPC, synthesized one-pot two-step manner, showed two 45 76 Pure 10% weight loss (Td10) 230 PU-PPC Td10 236–254 They were degradable upon UV light irradiation heat treatment, they resistant acid. The terpolymerization strategy using potentially enables one create CO2-based polymers such plastics elastomers degradability controlled or heat.

Язык: Английский

Synthesis and Postfunctionalization of Acrylate-Appended Poly(cyclohexene carbonate)s: Modulation of Properties of CO2-Based Polymers DOI Creative Commons
Chihiro Maeda,

Hina Inoue,

Tadashi Ema

и другие.

Macromolecules, Год журнала: 2025, Номер unknown

Опубликована: Фев. 3, 2025

Язык: Английский

Процитировано

0
Terpolymerization of Oxetane, CO2, and Isothiocyanates with Bifunctional Catalysts: Synthesis and Degradability of Poly(thioimidocarbonate-trimethylene carbonate)s DOI

Io Yamamoto,

Satoshi Muranaka,

Kunihiro Hirose

и другие.

ACS Applied Polymer Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 15, 2025

Язык: Английский

Процитировано

0
N-Heterocyclic Carbene-Based Group 4 Catalysts for the Terpolymerization of Cyclohexene Oxide and Cyclic Anhydrides with CO2 DOI Creative Commons
Lakshmi Suresh,

Kathrin Zwettler,

Karl W. Törnroos

и другие.

ACS Organic & Inorganic Au, Год журнала: 2025, Номер unknown

Опубликована: Май 13, 2025

Язык: Английский

Процитировано

0
Terpolymerization of Propylene Oxide, CO2, and p-Toluenesulfonyl Isocyanate for the Synthesis of Poly(urethane-carbonate): p-Toluenesulfonyl Isocyanate Acts as a Backbiting Suppressor DOI

Satoshi Muranaka,

Io Yamamoto,

Tadashi Ema

и другие.

ACS Applied Polymer Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 12, 2024

Terpolymerization of propylene oxide, CO2, and p-toluenesulfonyl isocyanate (TsNCO) was catalyzed by bifunctional AlIII porphyrin catalysts to afford polyurethane-poly(propylene carbonate), PU-PPC, with high CO2 contents up 39 wt %. TsNCO acted as a backbiting suppressor at the initial stage terpolymerization, contributing selective formation PU-PPC. In contrast electrophilicity TsNCO, carbamate anion generated reaction alkoxide intermediate has modest nucleophilicity owing tosyl group, which allows for smooth PU units subsequent elongation PPC on catalyst selectively produce Terpolymers having in 1:1 ratio had glass transition temperature (Tg) 86–104 °C, while those higher Tg values 39–40 °C. Block copolymer PU-b-PPC, synthesized one-pot two-step manner, showed two 45 76 Pure 10% weight loss (Td10) 230 PU-PPC Td10 236–254 They were degradable upon UV light irradiation heat treatment, they resistant acid. The terpolymerization strategy using potentially enables one create CO2-based polymers such plastics elastomers degradability controlled or heat.

Язык: Английский

Процитировано

2